Quartz Sleeve for Water Master - WG-15S UV Light Bulb for Germicidal Water Treatment EA PondMaster 18 you would use multiple units

you would use multiple units of the mountable sanitizers

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The germicidal light bulb provides you a worry-free experience for an entire year after which we recommend that you replace the light bulb

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Quartz Sleeve 20 x 22

Quartz Sleeve for Water Master - WG-15S UV Light Bulb for Germicidal Water Treatment EA PondMaster 18 you would use multiple unitsReplacement Quartz Sleeve for Water Master WG 15S UV Light Bulb for Germicidal Water Treatment In order for your germicidal water system to work effectively, it is imperative that the quartz sleeve is completely clear. A foggy or dirty quartz sleeve can significantly attenuate the power of your UVC bulb, resulting in substantially less sterilizing power. A good way to think about it is that if you have trouble seeing through the sleeve then it is very